Table 2.

Negative binomial multivariate model with minimal AIC using statistically significant meteorological factors

Variables	Coefficient	s.e.	P value	VIF	AIC
Intercept	−4·64537	2·83199	0·101	−
Population	0·65746	1·51262	0·664	1·1
Average temperature in July of the previous year (°C)	0·07940	0·05419	0·143	1·3
Average temperature in August of the previous year (°C)	0·16667	0·06329	0·008	1·7
Cumulative rainfall in July of the previous year (mm)	−0·00262	0·00083	0·002	1·3
Total snowfall from December of the previous year to March of following year (cm)	0·00105	0·00044	0·018	1·4	157·2

s.e., Standard error; VIF, variance inflation factor; AIC, Akaike's Information Criterion.